﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Disk
    {
        public string brand { get; set; }
        public Disk(string brand) { this.brand = brand; }
        public Disk() { }
        public void speak() { Console.WriteLine(brand); }
    }
}
